*SUPPORT*
IN: wif zup lug OUT: RED BLUE
IN: tufa gazzer wif zup tufa OUT: GREEN RED GREEN GREEN
IN: lug gazzer tufa OUT: BLUE GREEN BLUE
IN: lug OUT: BLUE
IN: lug wif gazzer blicket dax OUT: BLUE RED YELLOW YELLOW RED
IN: tufa dax OUT: GREEN GREEN
IN: lug dax OUT: BLUE BLUE
IN: tufa gazzer blicket dax OUT: GREEN YELLOW YELLOW GREEN
IN: wif OUT: RED
IN: lug wif gazzer lug OUT: BLUE RED BLUE RED
IN: wif blicket gazzer tufa zup wif OUT: RED YELLOW GREEN RED YELLOW
IN: blicket zup tufa OUT: YELLOW GREEN
IN: tufa blicket OUT: GREEN YELLOW
IN: blicket OUT: YELLOW

*QUERY*
IN: wif wif dax OUT: RED RED RED
IN: blicket blicket zup blicket OUT: YELLOW YELLOW YELLOW
IN: lug gazzer blicket dax OUT: BLUE YELLOW YELLOW BLUE
IN: blicket zup blicket OUT: YELLOW YELLOW
IN: blicket zup wif OUT: YELLOW RED
IN: wif dax OUT: RED RED
IN: tufa OUT: GREEN
IN: lug zup lug OUT: BLUE BLUE
IN: tufa zup lug OUT: GREEN BLUE
IN: blicket gazzer tufa OUT: YELLOW GREEN YELLOW

*GRAMMAR*
lug -> BLUE 
 wif -> RED 
 tufa -> GREEN 
 blicket -> YELLOW 
 u1 dax -> [u1] [u1] 
 u1 gazzer x1 -> [u1] [x1] [u1] 
 u1 zup u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 